Pinion Gear Height

PINION GEAR HEIGHT





1. Make sure all parts are clean and that the bearings are well lubricated.
2. Assemble the pinion bearings into the differential shim selection Tool, J34309.





^ Pinion front bearing; make sure the J34309-3 pinion front bearing seat is secured tightly against the J34309-2 gauge anvil. Then turn the pinion front bearing pilot, J34309-5, to secure the bearing in its proper position.
^ Rear pinion bearing; the pinion rear bearing pilot, J34309-8, is used to center the pinion rear bearing only. The pinion rear bearing locking seat, J34309-4, is used to lock the bearing to the assembly.
^ Installation of J34309-9 and J34309-16; place a suitable 2.5 mm (0.098 inch) thick plain washer between J34309-9 and J34309-16. Both surfaces of J34309-9 and J34309-16 must be parallel with a clearance of 2.5 mm (0.098 inch).





3. Install the pinion rear bearing inner race into the final drive housing. Then place the pinion preload shim selector Tool, J34309-1, gauge screw assembly.





4. Assemble the front pinion bearing inner race and the J34309-2 gauge anvil. Assemble them together with the J34309-1 gauge screw in the final drive housing. Make sure that the pinion height gauge plate, J34309-16, will turn a full 360 degrees. Tighten the two sections together by hand.





5. Turn the assembly several times to seat the bearings.





6. Measure the turning torque at the end of the J34309-2 gauge anvil using torque wrench J-25765A.
Turning torque specification: 1.0 - 1.3 Nm(0.11 - 0.13 kg-m, 9 - 11 inch lbs.)





7. Place the J34309-11 "R200A" pinion height adapter onto the gauge plate and tighten it by hand.

CAUTION: Make sure all machined surfaces are clean.

Pinion Height Adjusting Washer Selection





1. Now, position the side bearing discs, J25269-4, and arbor firmly into the side bearing bores. Install the bearing caps and tighten the cap bolts to proper torque.





2. Select the correct standard pinion height adjusting washer thickness. Select by using a standard gauge of 3 mm (0.12 inch) and your J34309-101 feeler gauge. Measure the distance between the J34309-11 pinion height adapter including the standard gauge and the arbor.





3. Write down your exact measurement (the value of feeler gauge).





4. Correct the pinion height washer size by referring to the "pinion head number".

There are two numbers painted on the drive pinion gear. The first one refers to the drive pinion and ring gear as a matched set. This number should be the same as the number on the ring gear. The second number is the "pinion head height number". It refers to the ideal pinion height from standard for quietest operation. Use the chart to determine the correct pinion height washer.





5. Select the correct pinion height washer.





6. Remove the J34309 pinion differential shim selection Tool from the final drive housing. Then disassemble to retrieve the pinion bearings.